Authors: Xiannong Fu, Anu G. Bourgeois, Pingzhi Fan, Yi Pan
Addresses: Department of Computer Science, Georgia State University Atlanta, GA 30303, USA. ' Department of Computer Science, Georgia State University, Atlanta, GA 30303, USA. ' Institute of Mobile Communications, Southwest Jiaotong University, Chengdu, Sichuan 610031, China. ' Department of Computer Science, Georgia State University, Atlanta, GA 30303, USA
Abstract: The Channel Assignment Problem is an NP-complete problem to assign a minimum number of channels under certain constraints to requested calls in a cellular radio system. Examples of the many approaches to solve this problem include using neural-networks, simulated annealing, graph colouring, genetic algorithms, and heuristic searches. We present a new heuristic algorithm that consists of three stages: 1) determine-lower-bound cell regular interval assignment; 2) greedy region assignment; and 3) genetic algorithm assignment. Through simulation, we show that our heuristic algorithm achieves lower bound solutions for 11 of the 13 instances of the well known Philadelphia benchmark problem. Our algorithm also has the advantage of being able to find optimum solutions faster than existing approaches that use neural networks.
Keywords: wireless cellular network; channel assignment; genetic algorithm; exhaustive search; heuristic algorithm; performance; simulation; mobile communications.
International Journal of Mobile Communications, 2006 Vol.4 No.3, pp.333 - 353
Published online: 06 Feb 2006 *Full-text access for editors Access for subscribers Purchase this article Comment on this article